EP2079858B1 - Anode for electrolysis - Google Patents

Anode for electrolysis Download PDF

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Publication number
EP2079858B1
EP2079858B1 EP07821230.5A EP07821230A EP2079858B1 EP 2079858 B1 EP2079858 B1 EP 2079858B1 EP 07821230 A EP07821230 A EP 07821230A EP 2079858 B1 EP2079858 B1 EP 2079858B1
Authority
EP
European Patent Office
Prior art keywords
anode
titanium
alloy
weight
coating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP07821230.5A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2079858A1 (en
Inventor
Giuseppe Faita
Fulvio Federico
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Industrie de Nora SpA
Original Assignee
Industrie de Nora SpA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Industrie de Nora SpA filed Critical Industrie de Nora SpA
Publication of EP2079858A1 publication Critical patent/EP2079858A1/en
Application granted granted Critical
Publication of EP2079858B1 publication Critical patent/EP2079858B1/en
Active legal-status Critical Current
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Classifications

    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25BELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B11/00Electrodes; Manufacture thereof not otherwise provided for
    • C25B11/04Electrodes; Manufacture thereof not otherwise provided for characterised by the material
    • C25B11/051Electrodes formed of electrocatalysts on a substrate or carrier
    • C25B11/055Electrodes formed of electrocatalysts on a substrate or carrier characterised by the substrate or carrier material
    • C25B11/057Electrodes formed of electrocatalysts on a substrate or carrier characterised by the substrate or carrier material consisting of a single element or compound
    • C25B11/061Metal or alloy
    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25BELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B11/00Electrodes; Manufacture thereof not otherwise provided for
    • C25B11/04Electrodes; Manufacture thereof not otherwise provided for characterised by the material
    • C25B11/051Electrodes formed of electrocatalysts on a substrate or carrier
    • C25B11/052Electrodes comprising one or more electrocatalytic coatings on a substrate
    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25BELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B11/00Electrodes; Manufacture thereof not otherwise provided for
    • C25B11/04Electrodes; Manufacture thereof not otherwise provided for characterised by the material
    • C25B11/051Electrodes formed of electrocatalysts on a substrate or carrier
    • C25B11/055Electrodes formed of electrocatalysts on a substrate or carrier characterised by the substrate or carrier material
    • C25B11/057Electrodes formed of electrocatalysts on a substrate or carrier characterised by the substrate or carrier material consisting of a single element or compound
    • C25B11/061Metal or alloy
    • C25B11/063Valve metal, e.g. titanium
    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25BELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B11/00Electrodes; Manufacture thereof not otherwise provided for
    • C25B11/04Electrodes; Manufacture thereof not otherwise provided for characterised by the material
    • C25B11/051Electrodes formed of electrocatalysts on a substrate or carrier
    • C25B11/073Electrodes formed of electrocatalysts on a substrate or carrier characterised by the electrocatalyst material
    • C25B11/075Electrodes formed of electrocatalysts on a substrate or carrier characterised by the electrocatalyst material consisting of a single catalytic element or catalytic compound
    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25BELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B11/00Electrodes; Manufacture thereof not otherwise provided for
    • C25B11/04Electrodes; Manufacture thereof not otherwise provided for characterised by the material
    • C25B11/051Electrodes formed of electrocatalysts on a substrate or carrier
    • C25B11/073Electrodes formed of electrocatalysts on a substrate or carrier characterised by the electrocatalyst material
    • C25B11/091Electrodes formed of electrocatalysts on a substrate or carrier characterised by the electrocatalyst material consisting of at least one catalytic element and at least one catalytic compound; consisting of two or more catalytic elements or catalytic compounds
    • C25B11/093Electrodes formed of electrocatalysts on a substrate or carrier characterised by the electrocatalyst material consisting of at least one catalytic element and at least one catalytic compound; consisting of two or more catalytic elements or catalytic compounds at least one noble metal or noble metal oxide and at least one non-noble metal oxide
    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25CPROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
    • C25C7/00Constructional parts, or assemblies thereof, of cells; Servicing or operating of cells
    • C25C7/02Electrodes; Connections thereof

Definitions

  • the production of chlorine is essentially carried out by electrolysis of alkali chloride solutions, in particular sodium chloride solutions, by means of three alternative technologies based on diaphragm, mercury cathode or, in the most advanced case, ion-exchange membrane electrolysers, equipped with anodes consisting of expanded or variously perforated titanium sheets provided with an electrocatalytic coating comprising platinum group metals and/or oxides thereof, optionally in admixture; anodes of such kind are for instance commercialised by Industrie De Nora under the trade-mark DSA®.
  • the inventors have surprisingly observed that it is possible to manufacture anodes with lengthy overall thermal treatment times without experiencing a sensible deterioration of the electrochemical working potentials when the substrate consists of suitable titanium alloys, in contrast with the teachings of the prior art: the invention therefore provides anodes of higher quality capable both of functioning with extended operative lifetimes in hydrochloric acid solution electrolysis or in sulphuric acid-containing electrolytes currently employed in electrometallurgy, and of producing chlorine with low oxygen percentages in chlorine-caustic soda electrolysis.
  • the thus-activated plates were operated at a current density of 0.4 A/m 2 in electrolysis cells at 90°C.
  • a perfluorinated Nafion 982 ion-exchange membrane commercialised by DuPont/USA subdivided the cells into two compartments, anodic and cathodic, with the plates under test and nickel cathodes of the same dimensions installed therein.
  • the two compartments respectively contained a sodium chloride solution at a concentration of 220 g/l and pH 3 and a 32% by weight sodium hydroxide solution.
  • the plates were installed in undivided cells containing a 10% by weight sulphuric acid solution at 60° and zirconium cathodes of the same size.
  • the plates were operated as anodes for oxygen evolution at a current density of 2 A/cm 2 in order to simulate substantially more severe operating conditions than those typical of electrometallurgical processes such as fast zinc electroplating of steel sheets or copper-foil deposition of controlled thickness.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Electrodes For Compound Or Non-Metal Manufacture (AREA)
  • Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
EP07821230.5A 2006-10-16 2007-10-12 Anode for electrolysis Active EP2079858B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT001974A ITMI20061974A1 (it) 2006-10-16 2006-10-16 Anodo per elettrolisi
PCT/EP2007/060863 WO2008046784A1 (en) 2006-10-16 2007-10-12 Anode for electrolysis

Publications (2)

Publication Number Publication Date
EP2079858A1 EP2079858A1 (en) 2009-07-22
EP2079858B1 true EP2079858B1 (en) 2018-08-22

Family

ID=38896125

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07821230.5A Active EP2079858B1 (en) 2006-10-16 2007-10-12 Anode for electrolysis

Country Status (19)

Country Link
US (1) US8007643B2 (ko)
EP (1) EP2079858B1 (ko)
JP (1) JP5616633B2 (ko)
KR (1) KR101322674B1 (ko)
CN (1) CN101528985B (ko)
AU (1) AU2007312292B2 (ko)
BR (1) BRPI0717451A2 (ko)
CA (1) CA2672862C (ko)
EG (1) EG25441A (ko)
ES (1) ES2696976T3 (ko)
HK (1) HK1134115A1 (ko)
IT (1) ITMI20061974A1 (ko)
MX (1) MX2009003950A (ko)
MY (1) MY149900A (ko)
NO (1) NO345047B1 (ko)
PT (1) PT2079858T (ko)
RU (1) RU2419686C2 (ko)
WO (1) WO2008046784A1 (ko)
ZA (1) ZA200902131B (ko)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102206837B (zh) * 2010-03-31 2014-03-19 比亚迪股份有限公司 一种惰性阳极及其制备方法
KR20130112037A (ko) 2010-09-24 2013-10-11 데트 노르스키 베리타스 에이에스 이산화탄소의 전기화학적 환원을 위한 방법 및 장치
DE102010043085A1 (de) 2010-10-28 2012-05-03 Bayer Materialscience Aktiengesellschaft Elektrode für die elektrolytische Chlorherstellung
JP4916040B1 (ja) * 2011-03-25 2012-04-11 学校法人同志社 電解採取用陽極および該陽極を用いた電解採取法
JP5008043B1 (ja) * 2011-09-13 2012-08-22 学校法人同志社 塩素発生用陽極
ES2944935T3 (es) 2012-02-23 2023-06-27 Treadstone Tech Inc Superficie de metal resistente a la corrosión y eléctricamente conductora
ITMI20122035A1 (it) * 2012-11-29 2014-05-30 Industrie De Nora Spa Elettrodo per evoluzione di ossigeno in processi elettrochimici industriali
CN105229202B (zh) * 2013-05-13 2019-03-15 霍加纳斯股份有限公司 阴极、电化学池及其用途
JP6651516B2 (ja) * 2014-10-27 2020-02-19 インドゥストリエ・デ・ノラ・ソチエタ・ペル・アツィオーニ 電気塩素化プロセスのための電極及びその製造方法
CN106119899A (zh) * 2016-06-28 2016-11-16 苏州吉岛电极科技有限公司 废水回用不溶性阳极板制备方法
JP6789035B2 (ja) * 2016-08-24 2020-11-25 株式会社神戸製鋼所 電極用チタン合金板
ES2850501T3 (es) * 2016-11-22 2021-08-30 Asahi Chemical Ind Electrodo para electrólisis
CN110586107A (zh) * 2019-10-14 2019-12-20 青岛科技大学 酸蚀刻的Ni、Co、Fe三元金属氢氧化物析氧催化剂的制备方法
EP4353866A1 (en) * 2022-10-13 2024-04-17 Titanium Technology S.L. Mixed metal oxide coatings for titanium alloys

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JP2528294B2 (ja) * 1986-11-11 1996-08-28 ペルメレック電極 株式会社 電解用電極及びその製造方法
CN1015480B (zh) * 1987-03-30 1992-02-12 上海钢铁研究所 电解用钛合金阳极及其制造方法
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Also Published As

Publication number Publication date
HK1134115A1 (en) 2010-04-16
PT2079858T (pt) 2018-11-27
KR20090080942A (ko) 2009-07-27
ITMI20061974A1 (it) 2008-04-17
US20090200162A1 (en) 2009-08-13
CN101528985B (zh) 2011-06-22
NO20091881L (no) 2009-05-13
ES2696976T3 (es) 2019-01-21
MX2009003950A (es) 2009-04-28
RU2009118413A (ru) 2010-11-27
KR101322674B1 (ko) 2013-10-30
AU2007312292A1 (en) 2008-04-24
NO345047B1 (no) 2020-09-07
EP2079858A1 (en) 2009-07-22
EG25441A (en) 2012-01-08
ZA200902131B (en) 2010-06-30
WO2008046784A1 (en) 2008-04-24
JP2010507017A (ja) 2010-03-04
CN101528985A (zh) 2009-09-09
CA2672862A1 (en) 2008-04-24
BRPI0717451A2 (pt) 2013-12-24
JP5616633B2 (ja) 2014-10-29
US8007643B2 (en) 2011-08-30
MY149900A (en) 2013-10-31
AU2007312292B2 (en) 2011-03-17
CA2672862C (en) 2014-06-10
RU2419686C2 (ru) 2011-05-27

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